forked from jasder/antlr
68 lines
2.5 KiB
C#
68 lines
2.5 KiB
C#
/*
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* [The "BSD license"]
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* Copyright (c) 2013 Terence Parr
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* Copyright (c) 2013 Sam Harwell
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using Antlr4.Runtime.Misc;
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using Antlr4.Runtime.Sharpen;
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namespace Antlr4.Runtime.Misc
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{
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[System.Serializable]
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public class MultiMap<K, V> : Dictionary<K, IList<V>>
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{
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private const long serialVersionUID = -4956746660057462312L;
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public virtual void Map(K key, V value)
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{
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IList<V> elementsForKey;
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if (!TryGetValue(key, out elementsForKey))
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{
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elementsForKey = new List<V>();
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this[key] = elementsForKey;
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}
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elementsForKey.Add(value);
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}
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public virtual IList<Tuple<K, V>> GetPairs()
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{
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IList<Tuple<K, V>> pairs = new List<Tuple<K, V>>();
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foreach (KeyValuePair<K, IList<V>> pair in this)
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{
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foreach (V value in pair.Value)
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{
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pairs.Add(Tuple.Create(pair.Key, value));
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}
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}
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return pairs;
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}
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}
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}
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